MicroLEDs Transmit Whopping Amounts of Data(spectrum.ieee.org)
spectrum.ieee.org
MicroLEDs Transmit Whopping Amounts of Data
https://spectrum.ieee.org/tech-talk/telecom/wireless/micro-led-lights-transmit-whopping-amounts-data
11 comments
There are product like this in industrie since a long time. We use it for crane application since the late 90s I think for about up to 100m.
Example. https://www.leuze.com/en/usa/products_us/data_transmission_c...
Example. https://www.leuze.com/en/usa/products_us/data_transmission_c...
What's the difference between these and regular fiber optic transceivers, aren't they LEDs too?
This is wireless. No wires or fiber cables. It is an alternative to RF which is susceptible to eavesdropping.
The idea that free space optics are somehow secure against eavesdropping seems to parallel 80's idea that you cannot practically tap into optical fiber. You still should encrypt the link if you at all care about its security.
>> Radio frequencies are also susceptible to hackers who can intercept signals, Islim notes, whereas visible light could be protected by opaque objects.
So the security hinges upon it being easier to block visible light than more conventional radio signals. Seems that a fibre optic is still more secure and likely to achieve greater range for the same transmission power.
So the security hinges upon it being easier to block visible light than more conventional radio signals. Seems that a fibre optic is still more secure and likely to achieve greater range for the same transmission power.
But what makes it work better outside fiber? LEDs by themselves are agnostic about the medium afaik. Maybe it's higher tx power in the noisier environment?
Can’t fiber optic transmitters blind you?
Singlemode fiber does use a laser, not just a "normal" light source.
"Sorry, you can't flash a 630 nanometer orange light - only Comcast has a license to do that here".
"You can use the 611 nanometer yellow-orange band, but only if your light is dimmer than 5 watts and switches off within 1 microsecond when requested to do so by emergency services".